var passport = require('passport');
var localStrategy = require('passport-local' ).Strategy;
// configure passport
passport.use(new localStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

var User = new Schema({
    email: String,
    password: String
});

router.post('/register', function(req, res) {
  User.register(new User({ email: req.body.email }),
    req.body.password, function(err, user) {
    if (err) {
      return res.status(500).json({
        err: err
      });
    }
    passport.authenticate('local')(req, res, function () {
      return res.status(200).json({
        status: 'Registration successful!'
      });
    });
  });
});

$scope.register = function () {

        // initial values
        $scope.error = false;
        $scope.disabled = true;

        // call register from service
        AuthService.register($scope.user.email, $scope.user.password)
        // handle success
            .then(function () {
                $location.path('/login');
                $scope.disabled = false;
                $scope.user = {};
            })
            // handle error
            .catch(function () {
                $scope.error = true;
                $scope.errorMessage = "Something went wrong!";
                $scope.disabled = false;
                $scope.user = {};
            });

    };

app.factory('AuthService',
    ['$q', '$timeout', '$http',
        function ($q, $timeout, $http) {

            // create user variable
            var user = null;

            // return available functions for use in the controllers
            return ({
                isLoggedIn: isLoggedIn,
                getUserStatus: getUserStatus,
                login: login,
                logout: logout,
                register: register
            });

            function isLoggedIn() {
                if(user) {
                    return true;
                } else {
                    return false;
                }
            }

            function getUserStatus() {
                return $http.get('/user/status')
                // handle success
                    .success(function (data) {
                        if(data.status){
                            user = true;
                        } else {
                            user = false;
                        }
                    })
                    // handle error
                    .error(function (data) {
                        user = false;
                    });
            }


            function register(email, password) {

                // create a new instance of deferred
                var deferred = $q.defer();

                // send a post request to the server
                $http.post('/user/register',
                    {email: email, password: password})
                // handle success
                    .success(function (data, status) {
                        if(status === 200 && data.status){
                            deferred.resolve();
                        } else {
                            deferred.reject();
                        }
                    })
                    // handle error
                    .error(function (data) {
                        deferred.reject();
                    });

                // return promise object
                return deferred.promise;

            }

}]);